Description
Round-bottom flask 100 ml with two necks, centre neck NS 29/32 and straight side neck NS 14/23, is a clear-glass laboratory vessel manufactured from borosilicate glass 3.3. The compact nominal volume of 0,1 l combined with the classic round-bottom shape provides uniform heating for small-scale distillation, synthesis and receiving applications. Dual ground joints enable concurrent connection of a condenser, thermometer adapter or other standard components; the main neck NS 29/32 and side neck NS 14/23 match widely used laboratory glassware. Borosilicate glass 3.3 delivers high chemical resistance and thermal shock tolerance suitable for heating-mantle or oil-bath work. Net weight is 0,072 kg. Produced by manufacturer Witeg, this two-neck flask is practical for micro-scale organic chemistry, solvent recovery and multi-step procedures that benefit from an extra port. Offered as a single piece, it belongs to the range of ground-joint round-bottom, distillation and receiving flasks routinely employed in research, analytical and teaching laboratories requiring dependable small-volume multi-neck vessels.
This article is part of Round-bottom flasks, in Beakers & flasks. See also Flat-bottom flasks.
Key features
- Pack size: 1 pc
- Nominal volume: 100 ml
- Number of necks: 2
- Centre neck: NS 29/32
- Side neck: NS 14/23 straight
- Material: Borosilicate glass 3.3
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Questions about Round bottom flask 100 ml two necks CN ST 29/32 +
What is this article?
Round bottom flask 100 ml two necks CN ST 29/32 + is the article on this page. Luminix Health distributes Witeg for laboratory use. It sits in Round-bottom flasks, inside Beakers & flasks, in Labware.
A round-bottom flask is the heating flask of a distillation or a reflux. The curved wall takes the heat, and the ground neck connects to a still head or a condenser. The joint size, not only the volume, has to match the rest of the set.
A beaker is an open working vessel: easy to pour, poor as a measure. An Erlenmeyer flask has a flat base and a conical wall so a liquid can be swirled without climbing out. A round-bottom flask is for heating under a condenser, because the heat meets a curved wall and the joint at the neck connects to the rest of the glassware. Borosilicate is the glass that survives the temperature change. These forms are listed under ISO laboratory glassware.
Which category should I open next?
The category is Beakers & flasks. The sub-category is Round-bottom flasks. The catalogue is Labware.
Shelves beside this one are Beakers, Erlenmeyer flasks, Reaction vessels & jacketed vessels, Flat-bottom flasks, Flasks (other) and Beaker & flask accessories.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

